/* 淘宝公共样式 */
body {
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    font-size: 12px;
    color: #333;
    margin: 0;
    padding: 0;
  }
  
  html {
    height: 100%;
    width: 100%;
  }
  
  a {
    text-decoration: none;
    color: #333;
  }
  
  a:hover {
    text-decoration: underline;
  }
  
  /* 清除浮动 */
  .clearfix::after {
    content: "";
    display: table;
    clear: both;
  }
  
  /* 水平居中 */
  .center {
    margin: 0 auto;
  }
  
  /* 响应式设计 */
  @media screen and (max-width: 768px) {
    body {
      font-size: 11px;
    }
  }